The theaflavin monomers inhibit the cancer cells growth in vitro.

Abstract

The inhibition effects of tea theaflavins complex (TFs), theaflavin-3-3'-digallate (TFDG), theaflavin-3'-gallate (TF2B), and an unidentified compound (UC) on the growth of human liver cancer BEL-7402 cells, gastric cancer MKN-28 cells and acute promyelocytic leukemia LH-60 cells were investigated. TFs was obtained through the catalysis of catechins with immobilized polyphenols oxidase. TFDG, TF2B and UC were isolated from TFs with high speed countercurrent chromatography (HSCCC). The results showed that TF2B significantly inhibited the growth of all three kinds of cancer cells, TFs, TFDG and UC had some effect on BEL-7402 and MKN-28, but little activity on LH-60. The inhibition effects of TF2B, TFDG, and UC on BEL-7402 and MKN-28 were stronger than TFs. The relationship coefficients between monomer concentration and its inhibition rate against MKN-28 and BEL-7402 were 0.87 and 0.98 for TF2B, 0.96 and 0.98 for UC, respectively. The IC50 values of TFs, TF2B, and TFDG were 0.18, 0.11, and 0.16 mM on BEL-7402 cells, and 1.11, 0.22, and 0.25 mM on MKN-28 cells respectively.

• Authors: You-Ying Tu, An-Bin Tang, Naoharu Watanabe
• Journal: Acta biochimica et biophysica Sinica (Acta Biochim Biophys Sin (Shanghai)) Vol. 36 Issue 7 Pg. 508-12 (Jul 2004) ISSN: 1672-9145 [Print] China
• PMID: 15248026 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Antineoplastic Agents
• Biflavonoids
• theaflavin
• Catechin

Topics

• Antineoplastic Agents (pharmacology)
• Biflavonoids (pharmacology)
• Catechin (pharmacology)
• Cell Division (drug effects)
• Cell Line, Tumor
• Chromatography, High Pressure Liquid
• Humans
• Leukemia, Promyelocytic, Acute (pathology)
• Liver Neoplasms (pathology)
• Stomach Neoplasms (pathology)